Rudolph W. Giuliani — the former mayor of New York, top federal prosecutor and a longtime ally of former President Donald J. Trump — has been disbarred from the practice of law effective immediately, a New York State appellate court ruled on Tuesday. The ruling continued the downfall of a disgraced lawyer who once portrayed himself as a crusader for law and order, challenged mob bosses and Wall Street operators and, after the Sept. 11 terror attacks, became, for many, a national hero. Mr...